People with narcissistic personality disorder find it difficult to cope and adapt to stress. Their personalities prevent them from seeking help, seeing it as a sign of weakness, which they find unacceptable.
Normal people vent their problems to their closest friends, especially when they find the pressures of life a bit too much to handle, a concept that narcissists aren’t comfortable with. Narcissistic personalities tend to keep their emotions and problems to themselves. When these pent-up feelings build up, narcissists cope by pushing themselves harder, leading to self-destructive results, worsening the cycle even more.